sorry my internet sucks, but i did find this article. its from a liberal station, to go with all your L- sites.
http://www.msnbc.msn.com/id/14806032/. its on the winter blend like i said earlier.
http://www.slate.com/id/2098672/ sorry this is 2 years old, but it talks about the summer blends and why its more expensive.
it seems that libs want to cut down on pollution so they make us spend more on gas. then when they make cleaner gas, they jump on republicans for uping the cost of gas. i think they are in a lose lose situation
sorry if my spelling is bad
so there is no gop control of the gas lines before the election, just another L-winged conspiracy